Furnace



Oct. 23, 1928. lSMS A. N. o'rls ET AL Y by lillaienled @ein E3,

Eel

ALBERT OTIS, @E SlCHECliTECfllailrli,` NEW YURK, ANB XABTS HUND HEIGHTS,MISSOUR, ASSIGNORS T0 GENERAL ELECTRIC COJIPNZ, A COR- ORATON OF NEWYORK.

FURNACEJ.

eppueaiion slee irma is, nier. serial ne. meer.

i @ur invention relates to furnaces and has 'for its object theprovision oi simple and reliable means whereby 'the heat stored in illecharge when taken out oi the furnace may be utilized to a large extentin prelieating a cold charge.

i@ur invention llas particular application to i'urnaces for beentreating metals such as for annealing metals, such asibrass and con per,alliougli it obviously has application 'eo wfurnaces in general. incarrying oui'J our inveniien, ive provide the usuel furnace chamberprovided Wil-li a source oi heat, also nreheaiing chamber connectedvvi'tli the jfurnace chamber and provided Wien supportn ing means *forthe charge whereby 'line charge is i'irst preheated in elle prelieatingchamber by elle liea'b given olit from a cooling charge therein, acharge being; healed ilie same i 'time in Jlie furnace chamber, At theend of a hearing operation cooled charge in lilie prelieating chamber isremoved and ille y heated charge transferred from the Afurnace nealingmetals. in this furnace heat reirao,

'tory Walls l0 are provided to define tivo chambers, a furnace heatingchamber il and preheating chamber l2. These tivo'cliainbers are placedadjacent each other and communicate Elirougli an opening i3 providedwith a door lli which may be raised verri 'cally to open position. "llieAfurnace cliamber il is provided with suitable healing' means ivliicli,as shown, may be eiecric heal;- 'ers l5 ai the iop-oi velle chamber andelectric beaters i6 in a suitablereeess in ilie boirtom oi "che chamber."A suitable rail or iop plele 17 is previdedon lelie bottom oi tbefurnace chamber to supporttlie charge. A door onening 18 closed by averrical door i9 is provided ai, the opposi'ee end eline furnace chamberalthough lbis door is nel; ordinarily used.

nace chamber to' a cold charge. lilo facilitare 'the movemeneoi 'hirecharges in ilie prelieacing chamber a supporb is provided havingf 'tivodecks or platforms A22 and 23 arranged vericall)7 eaced relation.'lliese decks or platforms are mounted on a suitable elevaied deviceasuch as a livdraulicalljyy opereied nis ion elevaier 52e so than figliedecias majbe raised or levi/ered es ilie ase may be io bring eilier eneopposite ine door openings and 2G, i

ln the operati-on or elle furnaces `three charges ueiiiaed elle sainecime These charges ere Chev/n in dotted lines and eensist ci a charge 25in the iurnz'ice cliamber 'which is being lieaied, previously beatercharge in ille prelieaiing chamber Awhich has just been removed from inefurnace chamber and is now being; cooled, and a cold charge 2i in eneprelieering chamber ivliicli is being preheated from iiie beat givenoil' 'from 'the coolingcharge 2f, At lie end of the heat treatingepererion ier elle charge 25, the doorl is raised and uli-e charge 26removed from the prelieaiing chamber. The

i door lli is innen raised and ilie charge 25 trans :erred Y,from 'illefurnace chamber io ine plaii'crm 23 in ilie prelieaiing chamber. Theplatforms and are noiv lowered by the device 24e uniil elle platform 22is on a level with the openings i3 and 2O aiier which the preheatedcharge 27 is moved inio lire ,iurnace chamber lll and a cold chargeputin its place through libe door opening` 20. The doors lll and 2i arenew closed and the hearing cycle repealed as previouslydescribed.

1lWhile we have described our inveniion es embodied in concrete 'formand as operaeingr in a speciiic manner in accordance with `be provisionsof 'the paieni siatures, ii should .be undersood that Awe do not limitour i11- vention thereto since various modiiearions thereof will sugneselliemselves "lo those skilled in ille are iviiliou'i, departing* `rfromtbe spirit or our invention ilie scope or' which is :Forth .in rireannexed claims.

ljifliae 'we claim as new and desire secure by Leiders Parent of 'lireUniied Sintes, is

ico

forming a heating chamber and a preheating chamber communicatingtherewith, heating means in said heating chamber, and a verticallymovable member in said preheating chamber acting as a common support fora cold charge being preheated and a hot charge being cooled. v

2. An annealing furnace comprising walls. forming a heating chamber anda preheating chamber, communicating therewith, heating means for saidheating chamber, and a movable support in said preheating chamber for acold charge being preheated and a hot charge being cooled, said supportbeing movable in said chamber to providev for the removal oi a cooledcharge from said preheating chamber, the transfer of a heated chargefrom said heating chamber to said preheating chamber,

the transfer Aof apreheated charge from the preheating chamber into saidheating chamber, and the insertion of a cold charge into said preheatingchamber.

3. An annealing` furnace comprising wallsI forming a heating chamber anda preheating chamber, said walls being provided with an opening leadinginto said preheating cham- 'ber and with an opening connecting saidchambers, a movable support in said preheating chamber provided withspaces for preheating a cold charge and for cooling a. heated charge,and means for moving said'support to bring said spaces into registeringrelation with said openings to effect the removal of th c cooled charge,the transfer of a hot charge from the'helating chamber to the preheatingchamber, the transfer of a preheated charge from the preheating chamberto the heating chamber, and the insertion of a cold charge into saidprehcating chamber.

4. An annealing furnace comprising walls forming a heating chamber and apreheating chamber' communicating therewith, heating means in saidheating chamber, and an elevating vdevice n said preheating chamberhaving decks providing supports for a cool charge being preheated and ahot charge being cooled while a third charge is being heated in saidheating chamber.

5. An annealing furnace comprising walls forming a heating chamber and apreheating chamber communicating therewith through a door opening,heating means in said heating chamber, a vertically vmovable support insaid preheating chamber having double decks providing supports for acold charge being preheated and a 'hot charge being cooled while a thirdcharge is being heated in said heating chamber, and means for ad.-justing said support in a vertical direction to bring said decks intoalinement with said door opening.

In' witness whereof, we have hereunto set our hands respectively the 3dday of March 1927, and the 9th day of March 1927.

ALBERT N. OTIS. LOUIS F. l/VOOLSTON.

